I'm sure he has quite alot to say about it, but he kept his word to his daughter. He didn't talk about it. And the music legend looked suitably uncomfortable as he was asked about his 18-year-old girl's budding romance with Justin Bieber.

Lionel was quizzed as he left a juice bar in Beverly Hills with Sofia over the weekend.

Asked about the pair dating, he declared: "I'm not going there," waving his hand. "I have strict instructions not to go there."

Sofia opted to walk away

Asked if he approved of their relationship, Lionel mumbled as he continued to walk along the street.

Eventually, it all got too much for Sofia who started running towards her car, saying she was feeling "uncomfortable".

Her father finally made some sort of comment about their affair.

Lionel appeared more laid back about the questions, saying he would "have to work out" if he could ever duet with the Sorry star.